Log File Formatter
Align key-value columns in messy log lines so patterns and errors jump out.
About Log File Formatter
Server logs, framework output, and CI output are dense walls of lines where the signal is buried in noise. This formatter aligns the recurring tokens in each line — levels, timestamps, status codes, paths — into tidy columns so patterns and errors jump out.
The tool pads columns to align across lines without changing any of the actual values, and colorizes tokens like ERROR and WARN so problem lines stand out immediately. Structured logs with key=value pairs and repeating fields format the best, and the original text is preserved exactly apart from padding.
Backend developers scanning production logs for errors, SREs triaging incidents, and QA testers reviewing test runner output all get a clearer picture of what happened. It is especially useful when a log spans many lines and the eye needs structure to follow the story.
How to Use
- Paste your log file, one entry per line.
- Press Format Logs.
- Review the aligned, color-coded output.
Example
ERROR 404 /missing GET ERROR 404 /missing GET
Columns are padded to align across lines, making levels, status codes, and paths easy to scan.
FAQ
What kinds of logs work best?
Structured logs with recurring tokens — like timestamps, levels, and key=value pairs — align beautifully.
Does it preserve the original text?
Yes, only padding changes. The actual values and their order are untouched.
Can it highlight error levels?
Yes, tokens like ERROR and WARN are colorized so problem lines stand out immediately.
Does it group lines by log level?
No, the original line order is always preserved. Formatting only aligns and colors tokens, so the chronological story of the log is never reordered and incident timelines stay intact.
Can it align logs with very long lines?
Yes. Long lines are handled by padding the columns that do align, and the rest of the line stays untouched, so even irregular entries are readable.